Suppression of superconductivity by X-ray irradiation induced disorders in organic superconductor κ - (BEDT - TTF)2Cu[N(CN)2]Br

Koichiro Sano, Takahiko Sasaki, Naoki Yoneyama, Norio Kobayashi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We report the X-ray irradiation effect on the superconductivity in the organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2]Br which is located nearby the Mott insulator-metal transition. The superconducting transition temperature Tc decreases almost linearly with increasing irradiation dose. The suppression rate of Tc for irradiation dose is larger than that reported so far in κ-(BEDT-TTF)2Cu(NCS) 2. The difference in the suppression of Tc between two organic superconductors might result from the different anion molecules, which may be altered by the X-ray irradiation, and the different strength of the electron correlation.

Original languageEnglish
Pages (from-to)S279-S281
JournalPhysica B: Condensed Matter
Volume405
Issue number11 SUPPL.
DOIs
Publication statusPublished - 2010 Jun 1

Keywords

  • Disorder
  • Organic superconductor
  • X-ray irradiation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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